鉛(qian)(qian)(qian)(qian)是(shi)一種(zhong)暗灰(hui)色的(de)金屬，熔(rong)(rong)點為327℃，它(ta)有(you)(you)很好的(de)耐腐(fu)蝕性能，常用(yong)(yong)來(lai)作(zuo)硫(liu)酸(suan)(suan)(suan)設(she)備(bei)和(he)管(guan)道襯里。鉛(qian)(qian)(qian)(qian)在(zai)(zai)大氣、淡水(shui)、海水(shui)中很穩定，鉛(qian)(qian)(qian)(qian)對硫(liu)酸(suan)(suan)(suan)、磷酸(suan)(suan)(suan)、亞硫(liu)酸(suan)(suan)(suan)、鉻酸(suan)(suan)(suan)和(he)氫(qing)氟(fu)酸(suan)(suan)(suan)等(deng)則有(you)(you)良(liang)好的(de)耐蝕性。鉛(qian)(qian)(qian)(qian)不耐硝酸(suan)(suan)(suan)的(de)腐(fu)蝕，在(zai)(zai)鹽酸(suan)(suan)(suan)中也不穩定。鉛(qian)(qian)(qian)(qian)質軟，可塑性好，管(guan)道工(gong)程中常用(yong)(yong)鉛(qian)(qian)(qian)(qian)管(guan)。在(zai)(zai)安(an)裝鑄鐵管(guan)承插口(kou)時，常用(yong)(yong)鉛(qian)(qian)(qian)(qian)做接口(kou)填塞材料，以牌號為Pb6的(de)鉛(qian)(qian)(qian)(qian)較適(shi)宜。硬鉛(qian)(qian)(qian)(qian)是(shi)鉛(qian)(qian)(qian)(qian)和(he)銻(ti)的(de)合金，它(ta)的(de)抗(kang)腐(fu)蝕性略低于純鉛(qian)(qian)(qian)(qian)，但(dan)機械強度較高，常用(yong)(yong)于制(zhi)造(zao)耐酸(suan)(suan)(suan)設(she)備(bei)。鉛(qian)(qian)(qian)(qian)蒸(zheng)氣有(you)(you)毒(du)，故熔(rong)(rong)化鉛(qian)(qian)(qian)(qian)時，要防止(zhi)燙傷和(he)鉛(qian)(qian)(qian)(qian)中毒(du)。在(zai)(zai)化工(gong)行業，鉛(qian)(qian)(qian)(qian)主(zhu)要用(yong)(yong)于處(chu)理硫(liu)酸(suan)(suan)(suan)的(de)設(she)備(bei)上(shang)。Pb4用(yong)(yong)作(zuo)設(she)備(bei)內襯，Pb6用(yong)(yong)作(zuo)管(guan)道接頭，硬鉛(qian)(qian)(qian)(qian)可制(zhi)造(zao)硫(liu)酸(suan)(suan)(suan)工(gong)業用(yong)(yong)的(de)泵(beng)、閥門、管(guan)道等(deng)。